Polyvinyl chloride insulated wire

It is applicable to power devices, household appliances, instruments and telecommunication equipment with an AC voltage of 450/750V and below.

Flame-retardant cables (wires) are characterized by being less likely to catch fire or having a slower flame spread after catching fire and being able to control it within a certain range. They are used in situations where high flame-retardant performance is required. Flame-retardant cables (wires) are classified into four categories: Class A, Class B, Class C and Class D, among which Class A has the best flame-retardant performance.

The characteristic of fire-resistant cables (wires) is that they can not only transmit electricity under normal working conditions but also maintain safe operation for a certain period of time even when burning. They are used in situations where there are high requirements for the fire resistance of cables. Different types of fire-resistant cables can be selected according to different requirements.

Halogen-free low smoke flame retardant cables are characterized by not only flame retardant performance but also low smoke emission and harmlessness (with relatively low toxicity and corrosiveness). They are suitable for places with special requirements for cable flame retardancy, smoke density, toxicity index, etc., such as subways, hospitals, schools, tunnels, nuclear power plants, etc.

BVR—铜芯聚氯乙烯绝缘软电缆

无卤低烟型为WDZA-BYJR、WDZB-BYJR、WDZC-BYJR、WDZD-BYJR

BV—铜芯聚氯乙烯绝缘电缆

无卤低烟型为WDZA-BYJ、WDZB-BYJ、WDZC-BYJ、WDZD-BYJ

RV—铜芯聚氯乙烯绝缘连接用软电缆

无卤低烟型为WDZA-RYJ、WDZB-RYJ、WDZC-RYJ、WDZD-RYJ

BLV—铝芯聚氯乙烯绝缘电缆

无卤低烟型为WDZA-BLYJ、WDZB-BLYJ、WDZC-BLYJ、WDZD-BLYJ

阻燃型：

根据GB/T19666标准规定，阻燃型电缆在普通型号前加ZA、ZB、ZC、ZD。

耐火型：

根据GB/T19666标准规定，阻燃型电缆在普通型号前加N。

1、U0/U为450/750V、300/500V

2、电缆的长期允许温度

—90型号允许工作温度不超过90℃；

其他型号允许工作温度应不超过70℃；

3、电缆的敷设温度应不低于0℃；

4、允许弯曲半径：

      电缆外径（D）小于25mm弯曲半径应不小于4D

      电缆外径（D）为25mm及以上者弯曲半径应不小于6D。

5、阻燃电缆（电线）的阻燃性能应通过GB/T18380、IEC60332成束电线电缆燃烧试验。        

6、耐火电缆（电线）的耐火性能应通过GB/T19216.21、IEC60331规定的耐火试验。